Does it automate data schema mapping?

Yes, it utilizes JavaScript injection to analyze the structure of live data objects within the browser, helping to accurately map types and properties into the OpenAPI schema.

Can it handle sites protected by Cloudflare or Akamai?

Yes, the skill includes specialized workflows for security handling, including managing cookies, TLS requirements, and simulating realistic user behavior to bypass common CDN protections.

How does this skill discover hidden APIs?

It uses Chrome automation to monitor network traffic in real-time, identifying XHR, Fetch, and GraphQL requests that the web application makes to its backend servers.

What is the primary output of this skill?

The primary output is a standardized OpenAPI 3.1 specification file, usually saved in the docs/openapi/ directory, which can be used for client generation.

Does it support GraphQL endpoints?

Yes, the discovery patterns are designed to identify GraphQL structures, query batching, and specific endpoint paths like /graphql.

Web API Reverse Engineering

Name: Web API Reverse Engineering
Author: vicentereig

byvicentereig

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웹 스크래핑 및 데이터 수집

Reverse engineers web applications to discover hidden APIs and automatically generate comprehensive OpenAPI 3.1 specifications.

This skill enables developers to systematically deconstruct web applications to uncover underlying API endpoints, data schemas, and authentication patterns. By leveraging Chrome automation and network traffic analysis, it automates the process of documenting undocumented APIs, handling complex scenarios like pagination, session cookies, and CDN bypasses. It is particularly useful for legacy system integration, competitive analysis, or building clients for services that lack official developer documentation, ultimately producing production-ready OpenAPI 3.1 specs within your Claude Code environment.

주요 기능

01Extension support for discovery notes including anti-bot and TLS requirements

02Automated API endpoint discovery via Chrome network traffic analysis

031 GitHub stars

04Dynamic OpenAPI 3.1 specification generation with detailed schema mapping

05Integrated session management and CDN bypass strategies for restricted sites

06Detection and documentation of complex pagination and authentication patterns

사용 사례

01Documenting legacy web applications that lack official developer documentation

02Mapping public data portals for automated data extraction and service integration

03Researching third-party web services to build custom, typed client libraries

What are Skills?·How to Install

Install with 🐟 Skill.Fish

npx skillfish add vicentereig/engineering web-api-reverse-engineering

For use in Claude.ai and ChatGPT

Download Skill